gis.h

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/******************************************************************************
 *
 * MODULE:      Grass Include Files
 * AUTHOR(S):   Original author unknown - probably CERL
 *              Justin Hickey - Thailand - jhickey@hpcc.nectec.or.th
 * PURPOSE:     This file contains definitions of variables and data types
 *              for use with most, if not all, Grass programs. This file is
 *              usually included in every Grass program.
 * COPYRIGHT:   (C) 2000-2025 by the GRASS Development Team
 *
 *              This program is free software under the GNU General Public
 *              License (>=v2). Read the file COPYING that comes with GRASS
 *              for details.
 *
 *****************************************************************************/
 
#ifndef GRASS_GIS_H
#define GRASS_GIS_H
 
/*============================= Include Files ==============================*/
 
/* System include files */
#include <stdio.h>
#include <stdarg.h>
 
/* Grass and local include files */
#include <grass/config.h>
#include <grass/datetime.h>
#include <grass/version.h>
 
/*=========================== Constants/Defines ============================*/
 
#if !defined __GNUC__ || __GNUC__ < 2
#undef __attribute__
#define __attribute__(x)
#endif
 
/*!
    \def UNUSED
    \brief A macro for an attribute, if attached to a variable,
           indicating that the variable is not used
*/
#if (defined(__GNUC__) || defined(__APPLE__)) && !defined(_MSC_VER)
#define UNUSED __attribute__((unused))
#else
#define UNUSED
#endif
 
static const char *GRASS_copyright UNUSED = "GRASS GNU GPL licensed Software";
 
/*!
    \def FALLTHROUGH
    \brief A macro for a fallthrough statement attribute
 */
#if (defined(__GNUC__) && __GNUC__ >= 7) || \
    (defined(__clang__) && __clang_major__ >= 12)
#define FALLTHROUGH __attribute__((__fallthrough__))
#else
#define FALLTHROUGH ((void)0)
#endif
 
/* GRASS version, GRASS date, git short hash of last change in GRASS headers
 * (and anything else in include)
 */
#define GIS_H_VERSION  GRASS_HEADERS_VERSION
/* git date of last change in GRASS headers
 * (and anything else in include)
 */
#define GIS_H_DATE     GRASS_HEADERS_DATE
 
#define G_gisinit(pgm) G__gisinit(GIS_H_VERSION, (pgm))
#define G_no_gisinit() G__no_gisinit(GIS_H_VERSION)
 
/* For boolean values and comparisons use the C99 type 'bool' with values 'true'
 */
/* and 'false' For historical reasons 'TRUE' and 'FALSE' are still valid. */
#ifndef TRUE
#define TRUE 1
#endif
 
#ifndef FALSE
#define FALSE 0
#endif
 
/*! \brief Cross-platform Newline Character */
#define NEWLINE '\n'
#ifdef __MINGW32__
#define HOST_NEWLINE "\r\n"
#else
#define HOST_NEWLINE "\n"
#endif
 
/*! \brief Generate warning if function return value is unused */
#if __GNUC__ && (__GNUC__ >= 3 && __GNUC_MINOR__ >= 4)
#define WARN_UNUSED_RESULT __attribute__((warn_unused_result))
#else
#define WARN_UNUSED_RESULT
#endif
 
/*!
   \brief List of units
 */
#define U_UNDEFINED      -1
#define U_UNKNOWN        0
#define U_ACRES          1
#define U_HECTARES       2
#define U_KILOMETERS     3
#define U_METERS         4
#define U_MILES          5
#define U_FEET           6
#define U_RADIANS        7
#define U_DEGREES        8
#define U_USFEET         9
/* Temporal units from the datetime library */
#define U_YEARS          DATETIME_YEAR
#define U_MONTHS         DATETIME_MONTH
#define U_DAYS           DATETIME_DAY
#define U_HOURS          DATETIME_HOUR
#define U_MINUTES        DATETIME_MINUTE
#define U_SECONDS        DATETIME_SECOND
 
/*! \brief Projection code - XY coordinate system (unreferenced data) */
#define PROJECTION_XY    0
/*! \brief Projection code - UTM */
#define PROJECTION_UTM   1
/*! \brief Projection code - State Plane */
#define PROJECTION_SP    2
/*! \brief Projection code - Latitude-Longitude */
#define PROJECTION_LL    3
/*! \brief Projection code - other projection (other then noted above) */
#define PROJECTION_OTHER 99
 
#define PROJECTION_FILE  "PROJ_INFO"
#define UNIT_FILE        "PROJ_UNITS"
#define EPSG_FILE        "PROJ_EPSG"
#define WKT_FILE         "PROJ_WKT"
#define SRID_FILE        "PROJ_SRID"
 
#ifdef __MINGW32__
#define CONFIG_DIR "GRASS8"
#else
#define CONFIG_DIR ".grass8"
#endif
 
#ifdef MAX
#undef MAX
#endif
#define MAX(a, b) ((a) > (b) ? (a) : (b))
 
#ifdef MIN
#undef MIN
#endif
#define MIN(a, b) ((a) < (b) ? (a) : (b))
 
/* define PI and friends */
#undef M_PI
#define M_PI 3.14159265358979323846 /* pi */
 
#undef M_PI_2
#define M_PI_2 1.57079632679489661923 /* pi/2 */
 
#undef M_PI_4
#ifdef _MSC_VER
/* use the same value from ucrt\corecrt_math_defines.h to avoid redefinition
 * warnings */
#define M_PI_4 0.785398163397448309616 /* pi/4 */
#else
#define M_PI_4 0.78539816339744830962 /* pi/4 */
#endif
 
#undef M_R2D
#define M_R2D 57.295779513082320877 /* 180/pi */
 
#undef M_D2R
#define M_D2R               0.017453292519943295769 /* pi/180 */
 
/* epsilon (IEEE: 2.220446e-16) */
#define GRASS_EPSILON       1.0e-15
 
/* Location of envariment variables */
#define G_VAR_GISRC         0
#define G_VAR_MAPSET        1
 
/* Where to find/store variables */
#define G_GISRC_MODE_FILE   0 /* files */
#define G_GISRC_MODE_MEMORY 1 /* memory only */
 
/* for G_parser() */
#define TYPE_INTEGER        1
#define TYPE_DOUBLE         2
#define TYPE_STRING         3
#define YES                 1
#define NO                  0
 
/* File/directory name lengths */
#define GNAME_MAX           256
#define GMAPSET_MAX         256
 
#define GPATH_MAX           4096
 
/* Basename default separator */
#define GBASENAME_SEP       "_"
 
/* Macros for type size independent integers                    */
/* Use these for portability to ensure integers are truly 32bit */
/* and are handled in a uniform manner                          */
 
/* Convert integer to 4 bytes - little endian */
#define serialize_int32_le(buf, x)     \
    do {                               \
        (buf)[0] = ((x) >> 0) & 0xFF;  \
        (buf)[1] = ((x) >> 8) & 0xFF;  \
        (buf)[2] = ((x) >> 16) & 0xFF; \
        (buf)[3] = ((x) >> 24) & 0xFF; \
    } while (0)
 
/* Convert 4 bytes to an integer - little endian */
#define deserialize_int32_le(buf) \
    (((buf)[0] << 0) | ((buf)[1] << 8) | ((buf)[2] << 16) | ((buf)[3] << 24))
 
/* Convert integer to 4 bytes - big endian */
#define serialize_int32_be(buf, x)     \
    do {                               \
        (buf)[0] = ((x) >> 24) & 0xFF; \
        (buf)[1] = ((x) >> 16) & 0xFF; \
        (buf)[2] = ((x) >> 8) & 0xFF;  \
        (buf)[3] = ((x) >> 0) & 0xFF;  \
    } while (0)
 
/* Convert 4 bytes to an integer - big endian */
#define deserialize_int32_be(buf) \
    (((buf)[0] << 24) | ((buf)[1] << 16) | ((buf)[2] << 8) | ((buf)[3] << 0))
 
/* Cross-platform Directory Separator Character and null device stuff */
#define GRASS_DIRSEP '/'
#ifdef __MINGW32__
#define HOST_DIRSEP '\\'
#define G_DEV_NULL  "NUL:"
#else
#define HOST_DIRSEP '/'
#define G_DEV_NULL  "/dev/null"
#endif
 
/*!
   \typedef STD_OPT
   \brief Standard option identifiers (enum)
 
   Identifies of all recognized standard options.
 
   The term <em>old</em> in the descriptions means existing map which
   is supposed to exist before the module is called.
   On the other hand, the term <em>new</em> in the descriptions means
   that the map is not supposed to exist and that module will create one.
 
   Used by the G_parser() system.
 
   IMPORTANT NOTE: when adding new item to STD_OPT you should also
   update STD_OPT_STRINGS array in general/g.parser/standard_option.c.
 
 */
typedef enum {
    G_OPT_UNDEFINED,
    G_OPT_DB_SQL,       /*!< SQL statements */
    G_OPT_DB_WHERE,     /*!< SQL where conditions */
    G_OPT_DB_TABLE,     /*!< table name */
    G_OPT_DB_DRIVER,    /*!< driver name */
    G_OPT_DB_DATABASE,  /*!< database name */
    G_OPT_DB_SCHEMA,    /*!< database schema */
    G_OPT_DB_COLUMN,    /*!< one attr column */
    G_OPT_DB_COLUMNS,   /*!< one or more attr columns */
    G_OPT_DB_KEYCOLUMN, /*!< key column */
 
    G_OPT_I_GROUP,    /*!< old input imagery group */
    G_OPT_I_SUBGROUP, /*!< old input imagery subgroup */
 
    G_OPT_MEMORYMB,      /*!< Maximum memory to be used (in MB): cache size for
                            raster rows */
    G_OPT_R_INPUT,       /*!< old input raster map */
    G_OPT_R_INPUTS,      /*!< old input raster maps */
    G_OPT_R_OUTPUT,      /*!< new output raster map */
    G_OPT_R_OUTPUTS,     /*!< new output raster maps */
    G_OPT_R_MAP,         /*!< old input raster map */
    G_OPT_R_MAPS,        /*!< old input rasters map */
    G_OPT_R_BASE,        /*!< old input base raster map */
    G_OPT_R_COVER,       /*!< old input cover raster map */
    G_OPT_R_ELEV,        /*!< old input elevation raster map */
    G_OPT_R_ELEVS,       /*!< old input elevation raster maps */
    G_OPT_R_TYPE,        /*!< raster map type */
    G_OPT_R_INTERP_TYPE, /*!< interpolation type */
    G_OPT_R_BASENAME_INPUT,  /*!< old input basename raster maps */
    G_OPT_R_BASENAME_OUTPUT, /*!< new output basename raster maps */
 
    G_OPT_R3_INPUT,  /*!< old input raster3d map */
    G_OPT_R3_INPUTS, /*!< old input raster3d maps */
    G_OPT_R3_OUTPUT, /*!< new output raster3d map */
    G_OPT_R3_MAP,    /*!< old input raster3d map */
    G_OPT_R3_MAPS,   /*!< old input raster3d maps */
    G_OPT_R3_TYPE,   /*!< Type (FCELL or DCELL) of a new created raster3d map */
    G_OPT_R3_PRECISION, /*!< The precision of the new generated raster3d map */
    G_OPT_R3_TILE_DIMENSION, /*!< The tile dimension of a new generated raster3d
                                map */
    G_OPT_R3_COMPRESSION, /*!< The kind of compression of a new created raster3d
                             map */
 
    G_OPT_V_INPUT,     /*!< old input vector map */
    G_OPT_V_INPUTS,    /*!< old input vector maps */
    G_OPT_V_OUTPUT,    /*!< new output vector map */
    G_OPT_V_MAP,       /*!< old input vector map */
    G_OPT_V_MAPS,      /*!< old input vector maps */
    G_OPT_V_TYPE,      /*!< primitive type */
    G_OPT_V3_TYPE,     /*!< primitive type, 2D and 3D */
    G_OPT_V_FIELD,     /*!< layer number (layers used to be called fields) */
    G_OPT_V_FIELD_ALL, /*!< layer number (layers used to be called fields) */
    G_OPT_V_CAT,       /*!< one category */
    G_OPT_V_CATS,      /*!< more categories */
    G_OPT_V_ID,        /*!< one feature id */
    G_OPT_V_IDS,       /*!< more feature ids */
 
    G_OPT_F_INPUT,     /*!< old input file */
    G_OPT_F_BIN_INPUT, /*!< old binary input file */
    G_OPT_F_OUTPUT,    /*!< new output file */
    G_OPT_F_SEP,       /*!< data field separator */
 
    G_OPT_C,        /*!< color */
    G_OPT_CN,       /*!< color or none */
    G_OPT_C_FORMAT, /*!< set color format to rgb,hex,hsv or triplet */
 
    G_OPT_M_UNITS,      /*!< units */
    G_OPT_M_DATATYPE,   /*!< datatype */
    G_OPT_M_MAPSET,     /*!< mapset */
    G_OPT_M_LOCATION,   /*!< location */
    G_OPT_M_DBASE,      /*!< dbase */
    G_OPT_M_COORDS,     /*!< coordinates */
    G_OPT_M_COLR,       /*!< color rules */
    G_OPT_M_DIR,        /*!< directory input */
    G_OPT_M_REGION,     /*!< saved region */
    G_OPT_M_NULL_VALUE, /*!< null value string */
    G_OPT_M_NPROCS,     /*!< number of threads for parallel computing */
    G_OPT_M_SEED,       /*!< seed for random number generator */
 
    G_OPT_STDS_INPUT, /*!< old input space time dataset of type strds, str3ds or
                         stvds */
    G_OPT_STDS_INPUTS,   /*!< old input space time datasets */
    G_OPT_STDS_OUTPUT,   /*!< new output space time dataset */
    G_OPT_STRDS_INPUT,   /*!< old input space time raster dataset */
    G_OPT_STRDS_INPUTS,  /*!< old input space time raster datasets */
    G_OPT_STRDS_OUTPUT,  /*!< new output space time raster dataset */
    G_OPT_STRDS_OUTPUTS, /*!< new output space time raster datasets */
    G_OPT_STR3DS_INPUT,  /*!< old input space time raster3d dataset */
    G_OPT_STR3DS_INPUTS, /*!< old input space time raster3d datasets */
    G_OPT_STR3DS_OUTPUT, /*!< new output space time raster3d dataset */
    G_OPT_STVDS_INPUT,   /*!< old input space time vector dataset */
    G_OPT_STVDS_INPUTS,  /*!< old input space time vector datasets */
    G_OPT_STVDS_OUTPUT,  /*!< new output space time vector dataset */
    G_OPT_MAP_INPUT,  /*!< old input map of type raster, vector or raster3d  */
    G_OPT_MAP_INPUTS, /*!< old input maps of type raster, vector or raster3d  */
    G_OPT_STDS_TYPE, /*!< the type of a space time dataset: strds, str3ds, stvds
                      */
    G_OPT_MAP_TYPE,  /*!< The type of an input map: raster, vect, rast3d */
    G_OPT_T_TYPE,    /*!< The temporal type of a space time dataset */
    G_OPT_T_WHERE,   /*!< A temporal GIS framework SQL WHERE statement */
    G_OPT_T_SAMPLE,  /*!< Temporal sample methods */
 
    G_OPT_F_FORMAT, /*!< set output format to plain text or JSON */
} STD_OPT;
 
/*!
   \typedef STD_FLG
   \brief  Standard flag identifiers (enum)
 
   Identifies of all recognized standard flags.
 
   Used by the G_parser() system.
 */
 
/**/ typedef enum {
    G_FLG_UNDEFINED,
    G_FLG_V_TABLE, /*!< do not create attribute table */
    G_FLG_V_TOPO   /*!< do not build topology */
} STD_FLG;
 
/* Parser rules for G__option_rule() */
enum rule_type {
    RULE_EXCLUSIVE,
    RULE_REQUIRED,
    RULE_REQUIRES,
    RULE_REQUIRES_ALL,
    RULE_EXCLUDES,
    RULE_COLLECTIVE
};
 
/* Message format */
#define G_INFO_FORMAT_STANDARD \
    0 /* GRASS_MESSAGE_FORMAT=standard or not defined */
#define G_INFO_FORMAT_GUI    1 /* GRASS_MESSAGE_FORMAT=gui */
#define G_INFO_FORMAT_SILENT 2 /* GRASS_MESSAGE_FORMAT=silent */
#define G_INFO_FORMAT_PLAIN  3 /* GRASS_MESSAGE_FORMAT=plain */
 
/* Icon types */
#define G_ICON_CROSS         0
#define G_ICON_BOX           1
#define G_ICON_ARROW         2
 
/* default colors */
#define DEFAULT_FG_COLOR     "black"
#define DEFAULT_BG_COLOR     "white"
#define DEFAULT_COLOR_TABLE  "viridis"
 
/* error codes */
#define G_FATAL_EXIT         0
#define G_FATAL_PRINT        1
#define G_FATAL_RETURN       2
 
/*! \brief Endian check */
#define ENDIAN_LITTLE        0
#define ENDIAN_BIG           1
#define ENDIAN_OTHER         2
 
/* for vector maps */
/*!
   \brief Name of default key column
 */
#define GV_KEY_COLUMN        "cat"
 
/*!
   \brief Element types identifiers (enum)
 
   Identifies various element types. Element can be raster map,
   vector map, etc.
 */
enum {                            /* Dir */
       G_ELEMENT_RASTER = 1,      /*!< raster */
       G_ELEMENT_RASTER3D = 2,    /*!< 3d raster */
       G_ELEMENT_VECTOR = 3,      /*!< vector */
       G_ELEMENT_ASCIIVECTOR = 4, /*!< ASCII vector */
       G_ELEMENT_LABEL = 5,       /*!< labels */
       G_ELEMENT_REGION = 6,      /*!< region */
       G_ELEMENT_GROUP = 7        /*!< group */
};
 
/*=========================== Typedefs/Structures ==========================*/
 
/*!
   \brief 2D/3D raster map header (used also for region)
 */
struct Cell_head {
    /*! \brief Max number of bytes per raster data value minus 1 (raster header
       only)
 
       Note: -1 for FP raster maps
     */
    int format;
    /*! \brief Compression mode (raster header only)
 
       - 0: uncompressed
       - 1: compressed
       - -1: pre GRASS 3.0
     */
    int compressed;
    /*! \brief Number of rows for 2D data */
    int rows;
    /*! \brief Number of rows for 3D data */
    int rows3;
    /*! \brief Number of columns for 2D data */
    int cols;
    /*! \brief Number of columns for 3D data */
    int cols3;
    /*! \brief number of depths for 3D data */
    int depths;
    /*! \brief Projection code
 
       - PROJECTION_XY
       - PROJECTION_UTM
       - PROJECTION_SP
       - PROJECTION_LL
       - PROJECTION_OTHER
     */
    int proj;
    /*! \brief Projection zone (UTM) */
    int zone;
    /*! \brief Resolution - east to west cell size for 2D data */
    double ew_res;
    /*! \brief Resolution - east to west cell size for 3D data */
    double ew_res3;
    /*! \brief Resolution - north to south cell size for 2D data */
    double ns_res;
    /*! \brief Resolution - north to south cell size for 3D data */
    double ns_res3;
    /*! \brief Resolution - top to bottom cell size for 3D data */
    double tb_res;
    /*! \brief Extent coordinates (north) */
    double north;
    /*! \brief Extent coordinates (south) */
    double south;
    /*! \brief Extent coordinates (east) */
    double east;
    /*! \brief Extent coordinates (west) */
    double west;
    /*! \brief Extent coordinates (top) - 3D data */
    double top;
    /*! \brief Extent coordinates (bottom) - 3D data */
    double bottom;
};
 
/*
 ** Structure for I/O of 3dview files  (view.c)
 */
struct G_3dview {
    char pgm_id[40];     /* user-provided identifier */
    float from_to[2][3]; /* eye position & lookat position */
    float fov;           /* field of view */
    float twist;         /* right_hand rotation about from_to */
    float exag;          /* terrain elevation exaggeration */
    int mesh_freq;       /* cells per grid line */
    int poly_freq;       /* cells per polygon */
    int display_type;    /* 1 for mesh, 2 for poly, 3 for both */
    int lightson;        /* boolean */
    int dozero;          /* boolean */
    int colorgrid;       /* boolean */
    int shading;         /* boolean */
    int fringe;          /* boolean */
    int surfonly;        /* boolean */
    int doavg;           /* boolean */
    char grid_col[40];   /* colors */
    char bg_col[40];     /* colors */
    char other_col[40];  /* colors */
    float lightpos[4];   /* east, north, height, 1.0 for local 0.0 infin */
    float lightcol[3];   /* values between 0.0 to 1.0 for red, grn, blu */
    float ambient;
    float shine;
    struct Cell_head vwin;
};
 
struct Key_Value {
    int nitems;
    int nalloc;
    char **key;
    char **value;
};
 
/*!
   \brief Structure that stores option information
 
   The descriptions member contains pairs of option and option
   descriptions separated by semicolon ';'.
   For example, when options member is set using:
   \code
   opt->options = "break,rmdupl"
   \endcode
   the descriptions member should be set to:
   \verbatim
   "break;break lines on intersections;"
   "rmdupl;remove duplicates"
   \endverbatim
 
   Parsed descriptions are stored in the same order as options.
 
   GUI dependency is a list of options (separated by commas) to be updated
   if the value is changed.
 
   Used by the G_parser() system.
 */
struct Option {
    const char *key;     /*!< Key word used on command line */
    int type;            /*!< Option type */
    int required;        /*!< REQUIRED or OPTIONAL */
    int multiple;        /*!< Multiple entries OK */
    const char *options; /*!< Approved values or range or NULL */
    const char **opts;   /*!< NULL or NULL terminated array of parsed options */
    const char *key_desc; /*!< one word describing the key */
    const char *label; /*!< Optional short label, used in GUI as item label */
    const char *description;  /*!< String describing option */
    const char *descriptions; /*!< ';' separated pairs of option and option
                                 descriptions */
    const char **descs;       /*!< parsed descriptions, array of
                               either NULL or string */
    char *answer;             /*!< Option answer */
    const char *def;          /*!< Where original answer gets saved */
    char **answers;           /*!< Option answers (for multiple=YES) */
    struct Option *next_opt;  /*!< Pointer to next option struct */
    const char *gisprompt;    /*!< Interactive prompt guidance */
    const char *guisection; /*!< GUI Layout guidance: ';' delimited hierarchical
                               tree position */
    const char *guidependency;    /*!< GUI dependency */
    int (*checker)(const char *); /*!< Routine to check answer or NULL  */
    int count;
};
 
/*!
   \brief Structure that stores flag info
 
   Used by the G_parser() system.
 */
struct Flag {
    char key;                /*!< Key char used on command line */
    char answer;             /*!< Stores flag state: 0/1 */
    char suppress_required;  /*!< Suppresses checking of required options */
    char suppress_overwrite; /*!< Suppresses checking of existing output */
    const char *label; /*!< Optional short label, used in GUI as item label */
    const char *description; /*!< String describing flag meaning   */
    const char *guisection; /*!< GUI Layout guidance: ';' delimited hierarchical
                               tree position */
    struct Flag *next_flag; /*!< Pointer to next flag struct */
};
 
/*!
   \brief Structure that stores module info
 
   Used by the G_parser() system.
 */
struct GModule {
    const char *label;       /*!< Optional short description for GUI */
    const char *description; /*!< String describing module */
    const char **keywords;   /*!< Keywords describing module */
    /* further items are possible: author(s), version, year */
    int overwrite; /*!< overwrite old files */
    int verbose;   /*!< print all information about progress and so on */
};
 
struct TimeStamp {
    DateTime dt[2]; /* two datetimes */
    int count;
};
 
struct Counter {
    int value;
};
 
struct Popen {
    FILE *fp;
    int pid;
};
 
typedef int CELL;
typedef double DCELL;
typedef float FCELL;
 
/* 64 bit signed integer */
#if HAVE_INT64_T
#include <sys/types.h>
typedef int64_t grass_int64;
#elif defined(__MINGW32__)
typedef __int64 grass_int64;
#elif HAVE_LONG_LONG_INT
typedef long long int grass_int64;
#elif HAVE_LARGEFILES
typedef off_t grass_int64;
#else
#error "no 64 bit integer available"
#endif
 
/* LCELL = large CELL, proposed new raster data type */
typedef grass_int64 LCELL;
 
struct _Color_Value_ {
    DCELL value;
    unsigned char red;
    unsigned char grn;
    unsigned char blu;
};
 
struct _Color_Rule_ {
    struct _Color_Value_ low, high;
    struct _Color_Rule_ *next;
    struct _Color_Rule_ *prev;
};
 
struct _Color_Info_ {
    struct _Color_Rule_ *rules;
    int n_rules;
 
    struct {
        unsigned char *red;
        unsigned char *grn;
        unsigned char *blu;
        unsigned char *set;
        int nalloc;
        int active;
    } lookup;
 
    struct {
        DCELL *vals;
        /* pointers to color rules corresponding to the intervals btwn vals */
        struct _Color_Rule_ **rules;
        int nalloc;
        int active;
    } fp_lookup;
 
    DCELL min, max;
};
 
struct Colors {
    int version; /* set by read_colors: -1=old,1=new */
    DCELL shift;
    int invert;
    int is_float; /* defined on floating point raster data? */
    int null_set; /* the colors for null are set? */
    unsigned char null_red;
    unsigned char null_grn;
    unsigned char null_blu;
    int undef_set; /* the colors for cells not in range are set? */
    unsigned char undef_red;
    unsigned char undef_grn;
    unsigned char undef_blu;
    struct _Color_Info_ fixed;
    struct _Color_Info_ modular;
    DCELL cmin;
    DCELL cmax;
    int organizing;
};
 
/*!
   \brief List of integers
 */
struct ilist {
    /*!
       \brief Array of values
     */
    int *value;
    /*!
       \brief Number of values in the list
     */
    int n_values;
    /*!
       \brief Allocated space for values
     */
    int alloc_values;
};
 
/*============================== Prototypes ================================*/
 
/* Since there are so many prototypes for the gis library they are stored */
/* in the file gisdefs.h */
#include <grass/defs/gis.h>
 
#endif /* GRASS_GIS_H */